Dynamic energy and mass balance model for an industrial alkaline water electrolyzer plant process

This paper proposes a parameter adjustable dynamic mass and energy balance simulatio nmodel for an industrial alkaline water electrolyzer plant that enables cost and energy ef-ficiency optimiz ation by means of system dimen sioning and control. 

Thus, the simulatio nmodel is based on mathematical models and white box coding, and it uses a practicable number of fixed paramete rs. Zero- dimensional energy and mass bal ances of each un it operation of a 3 MW, and 16 bar plant process were solv ed in MATLAB funct ions connected via a Simulink environment . Verification of the model was accom plished using an analo-gous industrial plan t of the same power and pressure range having the same operational systems design. The electroche mical, mass flow and thermal behavior of the simulatio n and the industrial plant were compared to ascertain the accuracy of the model and to enable modifi cation and detailed represen tation of real case scenar ios so that the model is suitable for use in future plant optimiz ation studies. The thermal model dynamically predicted the real case with 98.7 % accuracy. Shunt curren ts were the main contributor to relative low Faraday efficiency of 86 % at nominal load and steady-state operation and heat loss to ambient from stack was only 2.6 % of the total power loss.

© 2021 The Author(s). Pub lished by Elsevier Ltd on behalf of H ydrogen Energy Pub lications LLC. This is an open access article under the CC BY license (http://crea tivecommo ns.org

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Tài liệu được chia sẻ bởi CTV EBOOKBKMT "Nguyễn Duy Long" chỉ được dùng phục vụ mục đích học tập và nghiên cứu.

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This paper proposes a parameter adjustable dynamic mass and energy balance simulatio nmodel for an industrial alkaline water electrolyzer plant that enables cost and energy ef-ficiency optimiz ation by means of system dimen sioning and control. 

Thus, the simulatio nmodel is based on mathematical models and white box coding, and it uses a practicable number of fixed paramete rs. Zero- dimensional energy and mass bal ances of each un it operation of a 3 MW, and 16 bar plant process were solv ed in MATLAB funct ions connected via a Simulink environment . Verification of the model was accom plished using an analo-gous industrial plan t of the same power and pressure range having the same operational systems design. The electroche mical, mass flow and thermal behavior of the simulatio n and the industrial plant were compared to ascertain the accuracy of the model and to enable modifi cation and detailed represen tation of real case scenar ios so that the model is suitable for use in future plant optimiz ation studies. The thermal model dynamically predicted the real case with 98.7 % accuracy. Shunt curren ts were the main contributor to relative low Faraday efficiency of 86 % at nominal load and steady-state operation and heat loss to ambient from stack was only 2.6 % of the total power loss.

© 2021 The Author(s). Pub lished by Elsevier Ltd on behalf of H ydrogen Energy Pub lications LLC. This is an open access article under the CC BY license (http://crea tivecommo ns.org

LƯU Ý:

Tài liệu được chia sẻ bởi CTV EBOOKBKMT "Nguyễn Duy Long" chỉ được dùng phục vụ mục đích học tập và nghiên cứu.

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Chuyên mục: D. Luận văn chuyên ngành Hóa học - Vật liệu (Chemistry & Materials)